Adventures In Colonland

Five year old Michael Esteban and his mother Kari Esteban, crawl through a 40-foot long, 4-foot high replica of a human colon on July 11, 2003 in Seattle. The colon is used to educate people on colorectal cancer and Seattle is the ninth stop of a 20-city tour, next stop is Denver on July 23. (Photo by Ron Wurzer/Getty Images)

Giant Colon In Seattle

George Esteban crawls through a 40-foot long, 4-foot high replica of a human colon in Seattle on July 11, 2003. The colon is used to educate people on colorectal cancer and Seattle is the ninth stop of a 20-city tour, next stop is Denver on July 23. (Photo by Ron Wurzer/Getty Images)

Giant Colon In Seattle

Dawn Mason peeps her head up while crawling through a 40-foot long, 4-foot high replica of a human colon in Seattle on July 11, 2003. The colon is used to educate people on colorectal cancer and Seattle is the ninth stop of a 20-city tour, next stop is Denver on July 23. (Photo by Ron Wurzer/Getty Images)

Giant Colon In Seattle

Uddhava Shadday peeps his head up while crawling through a 40-foot long, 4-foot high replica of a human colon in Seattle on July 11, 2003. The colon is used to educate people on colorectal cancer and Seattle is the ninth stop of a 20-city tour, next stop is Denver on July 23. (Photo by Ron Wurzer/Getty Images)

Giant Colon In Seattle

Students from Eton Technical College, a medical school in Tacoma, WA. crawl through a 40-foot long, 4-foot high replica of a human colon in Seattle on July 11, 2003. The colon is used to educate people on colorectal cancer and Seattle is the ninth stop of a 20-city tour, next stop is Denver on July 23. (Photo by Ron Wurzer/Getty Images)

A man and dog sit outside the Super Colon, an 8-foot tall, 20-foot long, interactive replica of a human colon during Community Colon Cancer Prevention Day at the Jay Monahan Center for Gastrointestinal Health March 15, 2005 in New York City. The Super Colon shows people first-hand what colorectal polyps and cancer look like compared to healthy colon tissue. Colorectal cancer is the second leading cause of cancer deaths, yet it is 90% preventable and treatable if detected early. (Photo by Mario Tama/Getty Images)

A man eats his lunch outside the Super Colon, an 8-foot tall, 20-foot long, interactive replica of a human colon during Community Colon Cancer Prevention Day at the Jay Monahan Center for Gastrointestinal Health March 15, 2005 in New York City. The Super Colon shows people first-hand what colorectal polyps and cancer look like compared to healthy colon tissue. Colorectal cancer is the second leading cause of cancer deaths, yet it is 90% preventable and treatable if detected early. (Photo by Mario Tama/Getty Images)

A boy stands inside the Super Colon, an 8-foot tall, 20-foot long, interactive replica of a human colon during Community Colon Cancer Prevention Day at the Jay Monahan Center for Gastrointestinal Health March 15, 2005 in New York City. The Super Colon shows people first-hand what colorectal polyps and cancer look like compared to healthy colon tissue. Colorectal cancer is the second leading cause of cancer deaths, yet it is 90% preventable and treatable if detected early. (Photo by Mario Tama/Getty Images)